Gavin,
When I was down in Bunbury for Christmas, they were still using channel 14, however, I just came across something that was never, ever there before. (Note the date-approved)
http://web.acma.gov.au/pls/radcom/assig ... ID=8153065
It's on the same mast as Ch14, but it's a totally different freq. It's a repeater too.
Hmm, so yeah, not sure what is on Ch56, maybe just due to demand they've installed a 2nd repeater.
I'll confirm for you when I am down there in a couple of weeks - if nobody else beats me to it.